12233133221 has 4 divisors (see below), whose sum is σ = 12405430944. Its totient is φ = 12060835500.

The previous prime is 12233133197. The next prime is 12233133229.

12233133221 is nontrivially palindromic in base 10.

12233133221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12233133221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12233133229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86148755 + ... + 86148896.

It is an arithmetic number, because the mean of its divisors is an integer number (3101357736).

Almost surely, 2^12233133221 is an apocalyptic number.

It is an amenable number.

12233133221 is a deficient number, since it is larger than the sum of its proper divisors (172297723).

12233133221 is an equidigital number, since it uses as much as digits as its factorization.

12233133221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172297722.

The product of its digits is 1296, while the sum is 23.

The spelling of 12233133221 in words is "twelve billion, two hundred thirty-three million, one hundred thirty-three thousand, two hundred twenty-one".